Improvement in mills



2 Sheets-sheaf 1. J. KAIS ER Mills.

.No. 166,466. Patented Aug. 10,1875.

N-PETERS. PHOTO-LITHOGRAPBER, WASHKNGTONID c. I

UNITED STATES PATENT IMPROVEMENT IN MILLS.

Specification forming part of Letters Patent N 0. 166,466, dated August10, 1875; application filed September 30,1874.

To all whom it may concern:

Be it known that I, JACOB KAISER, of the township of York, in the countyof York, in the Province of Ontario, Canada, have invented certain newand useful Improvements in, Grain or Corn Crushing and Spice Mills; andI do hereby declare that the following is a full, clear, and exactdescription of the same, whereby others, being skilled in the art, mightmake and use the same, reference being had to the accompanying drawings,and to this specification.

My invention relates to a class of machines for which I obtained apatent in Canada in 1873, which machines move at a considerable speed.The grinding parts may be of chilled cast-iron, or of malleablecast-iron, or of steel. The character of the mill partakes somewhat ofthat of a flour-mill, but having, instead of stones for grinding, metaldisks, and these disks are furnished with a peculiar dress upon theirgrinding-surfaces, as hereinafter more fully described.

The frame or body of the mill may be of iron or other suitable material.The machinery consists of the following parts: First, of a horizontalaxle with a pulley, for receiving motion from some other pulley of anyordinary motive power. It is also furnished with a handle, and can bedriven by manual labor when necessary. On the inner end of thishorizontal shaft is a bevel-wheel. Second, of an upright shaft orspindle with a bevelpinion on the upper end, which meshes into theaforesaid bevel-wheel, and near to the lower end is a circular disk,truly turned on its upper face, on which is fastened the lowergrinding-disk. Third, the upper disk, which remains stationary, isfastened to the under side of a concave cylinder, in which the grainfalls on its Way to the grinding-disks or grinders. Fourth, a bracketwith step for foot of upright spindle, with a screw for regulating thedistance of the grinding-surfaces. Fifth, a hopper for receiving thegrain and, sixth, a shoe for conveying the same to the aforesaidgrinders.

In the accompanying drawings the same letters of reference indicate thesame parts in all the views, and also in this specification.

Figure 1 is a side View of my mill, shown partly in section for thebetter illustration of some of the parts, of which A is the frame; B,the horizontal shaft; B, the bevel-wheel. C is the upright spindle; Cthe bevel-pinion, and, when properly constructed, the hub of which formsthe upper journal of the spindle, there being a feather sunk in the samewhich slides up or down a groove in the eye of the pinion, to admit ofthe raising or lowering of the spindle without the pinion C being movedout of its working depth in bevel-Wheel B. C shows the turned disk; Cthe lower grinder; D, the concave cylinder, into the cavity of which thegrain falls from the shoe S. D is the upper grinder, which is fastenedto the under side of cylinder D, the central opening in this cylindercoinciding in position with that in the receiver D, and flaringinwardly, as seen at 00, Figs. 1 and 3, to aid in receiving anddistributing the material to be ground. On the cylinder are threeequidistant snugs, d, for the purpose of applying three-fold oversprings 01, one on each snug d, for the securing and adjusting of theupper grinder D, being, as aforesaid, fastened on the under side ofcylinder D. There are also three counter-screws, 01 which act on theunder side of the snugs cl, which react on the downward pressure of thesprings cl, and secure the cylinder D with the upper grinder D in asuitable position, the strain upon one or more of the springs dincreasing when any obstruction from a foreign substance, getting intothe grinders, causes the said springs d to yield and allow suchsubstance to pass through without doing any material damage to thegrindingsurtaces. E is a bracket for supporting the spindle c, with adjustin g-screw e for raising or lowering the spindle and regulating thegrinding position of the lower grinder C G is a curb to prevent the mealbeing thrown out from the mill, which, as it strikes the curb, fallsdown inside of the same. H is a hopper, in which the grain is firstplaced S, a shoe, into which it falls, and is shaken forward until itfalls inside of the cylinder D.

Fig. 2 is a plan, and Fig. 3 avfront elevation, for the betterillustration of the machinery. Fig. 4 is a sectional elevation ofspindle C, with disk 0, formed with a hub,

and with recess to simplify the fitting of the grinder O on the same. InFig. 5 the furrows y are straight but not radial, and they are out partway by a series of groups of arched grooves, 2, each of a series meetingone of the furrows, and cutting the remainder, as shown. In Fig. 3 thefurrows are substantially as in Fig. 5, but the slopes 6 cut into thecircular portion of the center, and are supplemented by other grooves,f, between their outer edge and the furrows. The slopes e are some ofthem cross-cut. In Fig. 8 the grooves f are omitted.

Sheet 2, Fig. 3, is a plan of the grinder D, its dress, and slopes e 6.Fig. 4. is a portion, as seen from its inner edge. Fig.6 is a portion ofthis grinder, (No. 5,) looking on the outer edge of the same. Fig. 7 isalso a portion looking from inner edge. Fig.8 is a plan of uppergrinder, slightly modified, showing its particular dress thereon, andslopes e e, 850. Fig. 9 is a portion of the same, looking from theinside edge. Fig. 10 is also a portion of the same, looking from outeredge.

It will now be seen that, by turning the shaft 13, it will revolve theupright spindle O, as also the grinder 0 If grain or corn or spices beplaced in the hopper H, it will fall into the shoe S, and thence intothe cavity of the cylinder D, and will slide down the slopes e 0 ontothe face of the lower grinder O and from the dress thereon, togetherwith that of the upper grinder D, it will issue at the circumference ofthe grinders in the character of meal, the fineness of which will dependupon the speed and the adjustment of the grinders (J and D.

Having thus described my invention, I claim 1. The combination, with theupper horizontal stationary metal grinder D, of the receiving-cylinderD, fixed upon its upper surface, the central opening in each coinciding,and the grinder flaring inwardly from its upper surface, all as shownand described.

2. The upper metallic grinder, (shown in Fig. 3,) having the slopes e ethereon cut into the circular portion of the center, and thesupplemental grooves f between their outer grooves and the furrows, theslopes 0 being, some of them, cross-cut, in combination with the lowermetallic grinder, (shown in Fig. 5,) having the groups of arched grooves2 cutting the straight but non-radial furrows y.

J AOOB KAISER.

Witnesses:

RoBr. JAMES, WILLIAM GILL.

